[deliverable/linux.git] / drivers / staging / comedi / drivers / ni_670x.c

/*
 * Comedi driver for NI 670x devices
 *
 * COMEDI - Linux Control and Measurement Device Interface
 * Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

/*
 * Driver: ni_670x
 * Description: National Instruments 670x
 * Author: Bart Joris <bjoris@advalvas.be>
 * Updated: Wed, 11 Dec 2002 18:25:35 -0800
 * Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
 * Status: unknown
 *
 * Commands are not supported.
 *
 * Manuals:
 *   322110a.pdf	PCI/PXI-6704 User Manual
 *   322110b.pdf	PCI/PXI-6703/6704 User Manual
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/slab.h>

#include "../comedi_pci.h"

#define AO_VALUE_OFFSET			0x00
#define	AO_CHAN_OFFSET			0x0c
#define	AO_STATUS_OFFSET		0x10
#define AO_CONTROL_OFFSET		0x10
#define	DIO_PORT0_DIR_OFFSET	0x20
#define	DIO_PORT0_DATA_OFFSET	0x24
#define	DIO_PORT1_DIR_OFFSET	0x28
#define	DIO_PORT1_DATA_OFFSET	0x2c
#define	MISC_STATUS_OFFSET		0x14
#define	MISC_CONTROL_OFFSET		0x14

enum ni_670x_boardid {
	BOARD_PCI6703,
	BOARD_PXI6704,
	BOARD_PCI6704,
};

struct ni_670x_board {
	const char *name;
	unsigned short ao_chans;
};

static const struct ni_670x_board ni_670x_boards[] = {
	[BOARD_PCI6703] = {
		.name		= "PCI-6703",
		.ao_chans	= 16,
	},
	[BOARD_PXI6704] = {
		.name		= "PXI-6704",
		.ao_chans	= 32,
	},
	[BOARD_PCI6704] = {
		.name		= "PCI-6704",
		.ao_chans	= 32,
	},
};

struct ni_670x_private {
	int boardtype;
	int dio;
};

static int ni_670x_ao_insn_write(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn,
				 unsigned int *data)
{
	unsigned int chan = CR_CHAN(insn->chanspec);
	unsigned int val = s->readback[chan];
	int i;

	/*
	 * Channel number mapping:
	 *
	 * NI 6703/ NI 6704 | NI 6704 Only
	 * -------------------------------
	 * vch(0)  :  0     | ich(16) :  1
	 * vch(1)  :  2     | ich(17) :  3
	 * ...              | ...
	 * vch(15) : 30     | ich(31) : 31
	 */
	for (i = 0; i < insn->n; i++) {
		val = data[i];
		/* First write in channel register which channel to use */
		writel(((chan & 15) << 1) | ((chan & 16) >> 4),
		       dev->mmio + AO_CHAN_OFFSET);
		/* write channel value */
		writel(val, dev->mmio + AO_VALUE_OFFSET);
	}
	s->readback[chan] = val;

	return insn->n;
}

static int ni_670x_dio_insn_bits(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn,
				 unsigned int *data)
{
	if (comedi_dio_update_state(s, data))
		writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);

	data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);

	return insn->n;
}

static int ni_670x_dio_insn_config(struct comedi_device *dev,
				   struct comedi_subdevice *s,
				   struct comedi_insn *insn,
				   unsigned int *data)
{
	int ret;

	ret = comedi_dio_insn_config(dev, s, insn, data, 0);
	if (ret)
		return ret;

	writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);

	return insn->n;
}

/* ripped from mite.h and mite_setup2() to avoid mite dependency */
#define MITE_IODWBSR	0xc0	 /* IO Device Window Base Size Register */
#define WENAB		(1 << 7) /* window enable */

static int ni_670x_mite_init(struct pci_dev *pcidev)
{
	void __iomem *mite_base;
	u32 main_phys_addr;

	/* ioremap the MITE registers (BAR 0) temporarily */
	mite_base = pci_ioremap_bar(pcidev, 0);
	if (!mite_base)
		return -ENOMEM;

	/* set data window to main registers (BAR 1) */
	main_phys_addr = pci_resource_start(pcidev, 1);
	writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);

	/* finished with MITE registers */
	iounmap(mite_base);
	return 0;
}

static int ni_670x_auto_attach(struct comedi_device *dev,
			       unsigned long context)
{
	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
	const struct ni_670x_board *board = NULL;
	struct ni_670x_private *devpriv;
	struct comedi_subdevice *s;
	int ret;
	int i;

	if (context < ARRAY_SIZE(ni_670x_boards))
		board = &ni_670x_boards[context];
	if (!board)
		return -ENODEV;
	dev->board_ptr = board;
	dev->board_name = board->name;

	ret = comedi_pci_enable(dev);
	if (ret)
		return ret;

	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
	if (!devpriv)
		return -ENOMEM;

	ret = ni_670x_mite_init(pcidev);
	if (ret)
		return ret;

	dev->mmio = pci_ioremap_bar(pcidev, 1);
	if (!dev->mmio)
		return -ENOMEM;

	ret = comedi_alloc_subdevices(dev, 2);
	if (ret)
		return ret;

	s = &dev->subdevices[0];
	/* analog output subdevice */
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = board->ao_chans;
	s->maxdata = 0xffff;
	if (s->n_chan == 32) {
		const struct comedi_lrange **range_table_list;

		range_table_list = kmalloc_array(32,
						 sizeof(struct comedi_lrange *),
						 GFP_KERNEL);
		if (!range_table_list)
			return -ENOMEM;
		s->range_table_list = range_table_list;
		for (i = 0; i < 16; i++) {
			range_table_list[i] = &range_bipolar10;
			range_table_list[16 + i] = &range_0_20mA;
		}
	} else {
		s->range_table = &range_bipolar10;
	}
	s->insn_write = ni_670x_ao_insn_write;

	ret = comedi_alloc_subdev_readback(s);
	if (ret)
		return ret;

	s = &dev->subdevices[1];
	/* digital i/o subdevice */
	s->type = COMEDI_SUBD_DIO;
	s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
	s->n_chan = 8;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = ni_670x_dio_insn_bits;
	s->insn_config = ni_670x_dio_insn_config;

	/* Config of misc registers */
	writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
	/* Config of ao registers */
	writel(0x00, dev->mmio + AO_CONTROL_OFFSET);

	return 0;
}

static void ni_670x_detach(struct comedi_device *dev)
{
	struct comedi_subdevice *s;

	comedi_pci_detach(dev);
	if (dev->n_subdevices) {
		s = &dev->subdevices[0];
		if (s)
			kfree(s->range_table_list);
	}
}

static struct comedi_driver ni_670x_driver = {
	.driver_name	= "ni_670x",
	.module		= THIS_MODULE,
	.auto_attach	= ni_670x_auto_attach,
	.detach		= ni_670x_detach,
};

static int ni_670x_pci_probe(struct pci_dev *dev,
			     const struct pci_device_id *id)
{
	return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
}

static const struct pci_device_id ni_670x_pci_table[] = {
	{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
	{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
	{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
	{ 0 }
};
MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);

static struct pci_driver ni_670x_pci_driver = {
	.name		= "ni_670x",
	.id_table	= ni_670x_pci_table,
	.probe		= ni_670x_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
3c5e1722	1	/*
15203e5a HS	2	* Comedi driver for NI 670x devices
	3	*
	4	* COMEDI - Linux Control and Measurement Device Interface
	5	* Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*/
3c5e1722 BJ	17
3c5e1722 BJ	18	/*
15203e5a HS	19	* Driver: ni_670x
	20	* Description: National Instruments 670x
	21	* Author: Bart Joris <bjoris@advalvas.be>
	22	* Updated: Wed, 11 Dec 2002 18:25:35 -0800
	23	* Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
	24	* Status: unknown
	25	*
	26	* Commands are not supported.
	27	*
	28	* Manuals:
	29	* 322110a.pdf PCI/PXI-6704 User Manual
	30	* 322110b.pdf PCI/PXI-6703/6704 User Manual
	31	*/
3c5e1722	32
ce157f80	33	#include <linux/module.h>
25436dc9	34	#include <linux/interrupt.h>
bda230cf	35	#include <linux/slab.h>
33782dd5	36
29321b55	37	#include "../comedi_pci.h"
3c5e1722	38
3c5e1722 BJ	39	#define AO_VALUE_OFFSET 0x00
	40	#define AO_CHAN_OFFSET 0x0c
	41	#define AO_STATUS_OFFSET 0x10
	42	#define AO_CONTROL_OFFSET 0x10
	43	#define DIO_PORT0_DIR_OFFSET 0x20
	44	#define DIO_PORT0_DATA_OFFSET 0x24
	45	#define DIO_PORT1_DIR_OFFSET 0x28
	46	#define DIO_PORT1_DATA_OFFSET 0x2c
	47	#define MISC_STATUS_OFFSET 0x14
	48	#define MISC_CONTROL_OFFSET 0x14
	49
3bac78ca HS	50	enum ni_670x_boardid {
	51	BOARD_PCI6703,
	52	BOARD_PXI6704,
	53	BOARD_PCI6704,
	54	};
3c5e1722	55
43313b07	56	struct ni_670x_board {
3c5e1722 BJ	57	const char *name;
3c5e1722 BJ	58	unsigned short ao_chans;
43313b07 BP	59	};
	60
	61	static const struct ni_670x_board ni_670x_boards[] = {
3bac78ca	62	[BOARD_PCI6703] = {
04b136b6	63	.name = "PCI-6703",
04b136b6	64	.ao_chans = 16,
3bac78ca HS	65	},
3bac78ca HS	66	[BOARD_PXI6704] = {
04b136b6	67	.name = "PXI-6704",
04b136b6	68	.ao_chans = 32,
3bac78ca HS	69	},
3bac78ca HS	70	[BOARD_PCI6704] = {
04b136b6	71	.name = "PCI-6704",
04b136b6	72	.ao_chans = 32,
04b136b6	73	},
3c5e1722 BJ	74	};
3c5e1722 BJ	75
8ce8a1ff	76	struct ni_670x_private {
3c5e1722 BJ	77	int boardtype;
3c5e1722 BJ	78	int dio;
8ce8a1ff BP	79	};
8ce8a1ff BP	80
d34b3d41 HS	81	static int ni_670x_ao_insn_write(struct comedi_device *dev,
	82	struct comedi_subdevice *s,
	83	struct comedi_insn *insn,
	84	unsigned int *data)
3c5e1722	85	{
d34b3d41	86	unsigned int chan = CR_CHAN(insn->chanspec);
1d0750ce	87	unsigned int val = s->readback[chan];
3c5e1722	88	int i;
3c5e1722	89
d34b3d41 HS	90	/*
	91	* Channel number mapping:
	92	*
	93	* NI 6703/ NI 6704 \| NI 6704 Only
	94	* -------------------------------
	95	* vch(0) : 0 \| ich(16) : 1
	96	* vch(1) : 2 \| ich(17) : 3
	97	* ... \| ...
	98	* vch(15) : 30 \| ich(31) : 31
	99	*/
3c5e1722	100	for (i = 0; i < insn->n; i++) {
d34b3d41	101	val = data[i];
c733110a BA	102	/* First write in channel register which channel to use */
c733110a BA	103	writel(((chan & 15) << 1) \| ((chan & 16) >> 4),
176db588	104	dev->mmio + AO_CHAN_OFFSET);
c733110a	105	/* write channel value */
d34b3d41	106	writel(val, dev->mmio + AO_VALUE_OFFSET);
3c5e1722	107	}
1d0750ce	108	s->readback[chan] = val;
3c5e1722	109
d34b3d41	110	return insn->n;
3c5e1722 BJ	111	}
3c5e1722 BJ	112
0a85b6f0 MT	113	static int ni_670x_dio_insn_bits(struct comedi_device *dev,
0a85b6f0 MT	114	struct comedi_subdevice *s,
97f4289a HS	115	struct comedi_insn *insn,
97f4289a HS	116	unsigned int *data)
3c5e1722	117	{
97f4289a	118	if (comedi_dio_update_state(s, data))
176db588	119	writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);
3c5e1722	120
176db588	121	data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);
3c5e1722	122
a2714e3e	123	return insn->n;
3c5e1722 BJ	124	}
3c5e1722 BJ	125
0a85b6f0 MT	126	static int ni_670x_dio_insn_config(struct comedi_device *dev,
0a85b6f0 MT	127	struct comedi_subdevice *s,
ddf62f2c HS	128	struct comedi_insn *insn,
ddf62f2c HS	129	unsigned int *data)
3c5e1722	130	{
ddf62f2c HS	131	int ret;
	132
	133	ret = comedi_dio_insn_config(dev, s, insn, data, 0);
	134	if (ret)
	135	return ret;
3c5e1722	136
176db588	137	writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);
3c5e1722 BJ	138
	139	return insn->n;
	140	}
	141
9949595c	142	/* ripped from mite.h and mite_setup2() to avoid mite dependency */
39798450 HS	143	#define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */
	144	#define WENAB (1 << 7) /* window enable */
	145
	146	static int ni_670x_mite_init(struct pci_dev *pcidev)
	147	{
	148	void __iomem *mite_base;
	149	u32 main_phys_addr;
	150
	151	/* ioremap the MITE registers (BAR 0) temporarily */
	152	mite_base = pci_ioremap_bar(pcidev, 0);
	153	if (!mite_base)
	154	return -ENOMEM;
	155
	156	/* set data window to main registers (BAR 1) */
	157	main_phys_addr = pci_resource_start(pcidev, 1);
	158	writel(main_phys_addr \| WENAB, mite_base + MITE_IODWBSR);
	159
	160	/* finished with MITE registers */
	161	iounmap(mite_base);
	162	return 0;
	163	}
	164
a690b7e5	165	static int ni_670x_auto_attach(struct comedi_device *dev,
3bac78ca	166	unsigned long context)
944a2f11	167	{
750af5e5	168	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
6e2b126d	169	const struct ni_670x_board *board = NULL;
289a4033	170	struct ni_670x_private *devpriv;
944a2f11 HS	171	struct comedi_subdevice *s;
	172	int ret;
	173	int i;
	174
3bac78ca	175	if (context < ARRAY_SIZE(ni_670x_boards))
6e2b126d HS	176	board = &ni_670x_boards[context];
6e2b126d HS	177	if (!board)
3bac78ca	178	return -ENODEV;
6e2b126d HS	179	dev->board_ptr = board;
6e2b126d HS	180	dev->board_name = board->name;
3bac78ca	181
818f569f HS	182	ret = comedi_pci_enable(dev);
	183	if (ret)
	184	return ret;
818f569f	185
0bdab509	186	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
c34fa261 HS	187	if (!devpriv)
c34fa261 HS	188	return -ENOMEM;
9a1a6cf8	189
39798450 HS	190	ret = ni_670x_mite_init(pcidev);
39798450 HS	191	if (ret)
944a2f11	192	return ret;
39798450	193
176db588 HS	194	dev->mmio = pci_ioremap_bar(pcidev, 1);
176db588 HS	195	if (!dev->mmio)
39798450	196	return -ENOMEM;
944a2f11 HS	197
	198	ret = comedi_alloc_subdevices(dev, 2);
	199	if (ret)
	200	return ret;
	201
fc041c20	202	s = &dev->subdevices[0];
944a2f11 HS	203	/* analog output subdevice */
	204	s->type = COMEDI_SUBD_AO;
	205	s->subdev_flags = SDF_WRITABLE;
6e2b126d	206	s->n_chan = board->ao_chans;
944a2f11 HS	207	s->maxdata = 0xffff;
	208	if (s->n_chan == 32) {
	209	const struct comedi_lrange **range_table_list;
	210
04226e40 GT	211	range_table_list = kmalloc_array(32,
	212	sizeof(struct comedi_lrange *),
	213	GFP_KERNEL);
944a2f11 HS	214	if (!range_table_list)
	215	return -ENOMEM;
	216	s->range_table_list = range_table_list;
	217	for (i = 0; i < 16; i++) {
	218	range_table_list[i] = &range_bipolar10;
	219	range_table_list[16 + i] = &range_0_20mA;
	220	}
	221	} else {
	222	s->range_table = &range_bipolar10;
	223	}
d34b3d41	224	s->insn_write = ni_670x_ao_insn_write;
1d0750ce HS	225
	226	ret = comedi_alloc_subdev_readback(s);
	227	if (ret)
	228	return ret;
944a2f11	229
fc041c20	230	s = &dev->subdevices[1];
944a2f11 HS	231	/* digital i/o subdevice */
	232	s->type = COMEDI_SUBD_DIO;
	233	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
	234	s->n_chan = 8;
	235	s->maxdata = 1;
	236	s->range_table = &range_digital;
	237	s->insn_bits = ni_670x_dio_insn_bits;
	238	s->insn_config = ni_670x_dio_insn_config;
	239
	240	/* Config of misc registers */
176db588	241	writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
944a2f11	242	/* Config of ao registers */
176db588	243	writel(0x00, dev->mmio + AO_CONTROL_OFFSET);
944a2f11	244
464c9451	245	return 0;
944a2f11 HS	246	}
	247
	248	static void ni_670x_detach(struct comedi_device *dev)
	249	{
70fcd1b7	250	struct comedi_subdevice *s;
289a4033	251
aac307f9	252	comedi_pci_detach(dev);
70fcd1b7	253	if (dev->n_subdevices) {
fc041c20	254	s = &dev->subdevices[0];
70fcd1b7 HS	255	if (s)
	256	kfree(s->range_table_list);
	257	}
944a2f11 HS	258	}
944a2f11 HS	259
6f37e288 HS	260	static struct comedi_driver ni_670x_driver = {
	261	.driver_name = "ni_670x",
	262	.module = THIS_MODULE,
750af5e5	263	.auto_attach = ni_670x_auto_attach,
6f37e288 HS	264	.detach = ni_670x_detach,
	265	};
	266
a690b7e5	267	static int ni_670x_pci_probe(struct pci_dev *dev,
b8f4ac23	268	const struct pci_device_id *id)
6f37e288	269	{
b8f4ac23	270	return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
6f37e288 HS	271	}
6f37e288 HS	272
41e043fc	273	static const struct pci_device_id ni_670x_pci_table[] = {
3bac78ca HS	274	{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
	275	{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
	276	{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
6f37e288 HS	277	{ 0 }
	278	};
	279	MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
	280
	281	static struct pci_driver ni_670x_pci_driver = {
9e4edd57	282	.name = "ni_670x",
6f37e288 HS	283	.id_table = ni_670x_pci_table,
6f37e288 HS	284	.probe = ni_670x_pci_probe,
9901a4d7	285	.remove = comedi_pci_auto_unconfig,
6f37e288 HS	286	};
	287	module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
	288
3c323c01 IA	289	MODULE_AUTHOR("Comedi http://www.comedi.org");
	290	MODULE_DESCRIPTION("Comedi low-level driver");
	291	MODULE_LICENSE("GPL");